Structural Optimization of a Control Arm with Consideration of Durability Criteria

내구기준을 고려한 컨트롤 암의 구조최적설계

  • 김종규 (동아대학교 대학원 기계공학과) ;
  • 박영철 (동아대학교 기계공학과) ;
  • 김영준 ((주) 센트랄 중앙 연구소) ;
  • 이권희 (동아대학교 기계공학과)
  • Published : 2009.11.01


This study suggests a structural design process for the upper control arm installed at a vehicle. Static strength and durability are the most important responses in the structural design of a control arm. This study considers the static strength in the optimization process. The inertia relief method for FE analysis is utilized to simulate the static loading conditions. According to the classification of structural optimization, the structural design of a control arm is included in the category of shape optimization. In this study, the metamodel technique using the kriging method is adopted to obtain the minimum weight satisfying the strength constraint. Then, the final design is suggested by considering the durability criteria. The durability assessment is obtained by the index of fatigue durability called the SWT (Smith-Watson-Topper) index. The final optimum shape has been proposed by trial and error method.


Metamodel;Kriging;Shape Optimization;Durability


  1. Song, B. C., Park, Y. C., Kang, S. W. and Lee, K. H., 2009, 'Structural Optimization Of An Upper Control Arm, Considering the Strength,' Proceedings IMechE Part D : Journal of Automobile Engineering Vol. 223, pp. 727-735
  2. Lee, D. C. and Lee, J. I., 2003, 'Structural Optimization Concept for the Design of an Aluminium Control Arm,' Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, Vol. 217, No. 8, pp.647-656
  3. Kim, M. S., Lee, C. W., Son, S. H., Lim, H. J. and Heo, S. J., 2003, 'Shape Optimization for Improving Fatigue Life of a Lower Control Arm Using the Experimental Design,' Transactions of KSAE, Vol. 11, No. 3, pp. 161-166
  4. Kim, Y.S., Son, H. S., Park, J. Y., Choi, S. G. and Yang, S. H., 2006, 'Finite Element Analysis to Design and Optimized Forming Conditions for Lower Control Arm,' Metallurgical and Materials Transactions A, Vol. 37A, pp. 2539-2547
  5. Ahn, P. S., Baeck, S. M., Lee, H. D., Kim, D. U. and Kim, W. J., 2006, 'Development of Aluminum Automotive Control Arm Using Squeeze Casting Process,' Proc. JSAE Annual Congress, Vol. 18-06, pp. 9-12
  6. Guinta, A. and Watson., L., 1998, 'A Comparison of Approximation Modeling Techniques: Polynomial versus Interpolating Models,' Proceedings of the 7th AIAA/USAF/NASA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, St. Louis, Mo, AIAA, Vol. 2, pp. 392-440
  7. Bessert, N. and Frederich, O., 2005, 'Nonlinear Airship Aeroelasticity,' Journal of Fluids and Structures, Vol. 21, No. 8, pp. 731-742
  8. DNDE, 2006, ANSYS WORKBENCH-Simulation Introduction Release 10.0, Busan, Korea
  9. MSC Software Corporation, 2004, MSC.NASTRAN 2004 Design Sensitivity and Optimization User's Guide, Santa Ana, California
  10. VR & D, Inc., 2000, GENESIS Version 6.0 User's Manual, Colorado Springs, Colorado
  11. Song, B. S., Park, H. S., Kwon, Y. M., Kim, S. H., Park, Y. C. and Lee, K. H., 2009, ' Structural Design of an Upper Control Arm, Considering Static Strength,' Transaction of KSAE, Vol. 17, No. 1, pp.190-196
  12. Sacks, J., Welch, W. J., Mitchell, T. J. and Wynn, H. P., 1989, 'Design and Analysis of Computer Experiments,' Statistical Science, Vol. 4, No. 4, pp. 409-435
  13. Lee, K. H. and Kang, D. H., 2007, 'Structural Optimization of an Automotive Door Using the Kriging Interpolation Method,' Proceedings of the Institution of Mechanical Engineers Part D: Journal of Automobile Engineering, Vol. 221, No. 12, pp. 1524-1534